You can't buy your software anymore, you just rent it. That means you can't just pay once and do whatever you want with that license -- you keep paying, forever (way more than you would have under the old "buy a copy of version x" model) and, being that this software is constantly phoning home to Microsoft, can be changed, cut off, etc. at their whim (as well as more easily hacked / hijacked). Adobe, Intuit, and others of the old desktop software brigade are all moving to this model. It's great for them because of the recurring cash flow, but exactly what is the benefit for the end user besides promised "upgrades"? Do we really need another version of Word (God no -- quit changing it and forcing us to re-learn your shitty interface!)? Did Generally Accepted Accounting Principles change that much that a new major version of QuickBooks is required every year? This should be a huge slam dunk opportunity for the open source desktop software community.